scholarly journals Removing instability of inflation in Polonyi–Starobinsky supergravity by adding FI term

2018 ◽  
Vol 33 (05) ◽  
pp. 1850032 ◽  
Author(s):  
Yermek Aldabergenov ◽  
Sergei V. Ketov
Keyword(s):  
Dark Matter ◽  
Supersymmetry Breaking ◽  
Massive Vector ◽  
Explicit Realization

Polonyi–Starobinsky (PS) supergravity is the [Formula: see text] supergravity model of Starobinsky inflation with spontaneous supersymmetry breaking (after inflation) due to Polonyi superfield, and inflaton belonging to a massive vector supermultiplet. The PS model is used for an explicit realization of the (super-heavy) gravitino dark matter scenario in cosmology. We find a potential instability in this model, and offer a mechanism for its removal by adding a Fayet–Iliopoulos (FI) term.

scholarly journals Gravitino Warm Dark Matter Motivated by Gauge-Mediated Supersymmetry Breaking Theories

1997 ◽  
Vol 12 (17) ◽  
pp. 1275-1282 ◽  
Author(s):  
M. Kawasaki ◽  
Naoshi Sugiyama ◽  
T. Yanagida
Keyword(s):  
Dark Matter ◽  
Power Spectrum ◽  
Supersymmetry Breaking ◽  
Large Scale ◽  
Cold Dark Matter ◽  
Baryon Density ◽  
Present Observation ◽  
Matter Model ◽  
The Universe ◽  
Dark Matter Model

Gauge-mediated supersymmetry breaking models suggest the presence of the light gravitino with mass ~ 1 keV which can be warm dark matter in our universe. We consider large scale structure of the universe in the warm dark matter model and find that the power spectrum of the gravitino dark matter is almost the same as that of a cold dark matter at scales larger than about 1 Mpc. We also study the Ly α absorption systems which are presumed to be galaxies at high redshifts and show that the baryon density in the damped Ly α absorption systems predicted by the gravitino dark matter model is quite consistent with the present observation.

scholarly journals Nonuniversal soft supersymmetry breaking and dark matter

1997 ◽  
Vol 56 (5) ◽  
pp. 2820-2832 ◽  
Author(s):  
Pran Nath ◽  
R. Arnowitt
Keyword(s):  
Dark Matter ◽  
Supersymmetry Breaking ◽  
Soft Supersymmetry Breaking
Sign in / Sign up

Export Citation Format

Share Document